IDcollectionsQuizchain2

quizchain2/16

Solved on 2019-05-25 after 1d 5h 33m, key derived from the published recipe. 0.007 BTC on Bitcoin.

Story

What the post asked, what the answer turned out to be, and what the chain says happened. The record below holds the data.

A hard name from 2012

Block 16 went up a minute after block 15, on May 24, 2019. Block 15 was a lottery. This one is meant to be harder, and it is.

The question: Difficult name found in 2012. The format is [solution] TOMI [TOMI]. The capitalization "will be obvious if you find the correct method", and the TOMI field is "a string of 9 random characters". Digits bbc, and later, by popular demand, 3 for the solution alone.

Then came hint 1, a bit early: "9 random characters TOMI field and 9 characters name."

ELiZABETH

Found? Yes, as in found by a vanity address generator. In 2012 someone found 1ELiZABETHdzGTuQeg2RnCcWBMVo3ySfTz, a record nine characters long. The name is ELiZABETH, odd lower case i included. The nine random characters after it are the TOMI field.

So the string is ELiZABETH TOMI dzGTuQeg2. The claim confirmed at 07:23:02 UTC on May 25, and u/puzzleponky posted the answer five minutes later, with the Bitcointalk post where they found the address. They liked it. "A perfect question for the solution."

Almost

The best miss belongs to u/mooncritic. Trendon Shavers TOMI Pirate@40 hashes to 6bbcc010…. The target starts with bbc. One character off at the front. Painful.

The post never got an update with the answer. The author moved on, and the comment plus the claim's public key do the job.

IDquizchain2/1616 / 202019-05-24 → 2019-05-25
Puzzle / quizchain2

16

bitcoinp2pkh solved

Record 

bitcoinPuzzle({
  address: p2pkh("1JVXDyfoZMYa…bGbFQLTU", "bfdf03c78fcf…e23d4093"),
  status: Status.Solved,
  key: wif("L5FzJxW7EFxB…dUbA5AMF").entropy("bbc3a6f7d13a…a04f6636", source("https://www.…lock_16/")).derived(),
})
Prize
0.007 BTC
Key material
wif, derived from the recipe
Verification
verified
Solved
2019-05-25 · 1d 5h 33m
tx 2
Trail
Explorerblockstream.info
Sourcereddit.com/r/Grycoin/comments/bsccmw/7_mbtc_quizchain_2_block_16
Tryquizchain2/16 in the playground
Address
1JVXDyfoZMYaKPu2XYZpWVk9K8bGbFQLTU

hash160 bfdf03c78fcfda2483b42e5b14bf7804e23d4093

Balance
asking the explorer

Key

public key · compressed
02a1fe675edae6db2bebfefdc8998877a33ff7f3d7cd413b96cfee166d89b929d3
WIF
L5FzJxW7EFxBvxa3gZa2AtVwdPriP3UYcCH7WRuzVWdjdUbA5AMF
entropy hash
bbc3a6f7d13ab0fc07863e6ba04f6636

Transactions

  1. funding2019-05-240.007 BTC66fbf3b113…1477ba
  2. claim2019-05-250.00656992 BTCc003b65e17…d5f668

Hints

  1. undated

    officialQuestion: Difficult name found in 2012.

    Sourcereddit.com/r/Grycoin/comments/bsccmw/7_mbtc_quizchain_2_block_16

    Published answer

    Solution was: ELiZABETH TOMI dzGTuQeg2 from a vanity address 1ELiZABETHdzGTuQeg2RnCcWBMVo3ySfTz that was a record 9 characters long found in 2012.

    Sourcereddit.com/r/Grycoin/comments/bsccmw/comment/eopmxex

  2. undated

    officialFormat: [solution] TOMI [TOMI]

    Sourcereddit.com/r/Grycoin/comments/bsccmw/7_mbtc_quizchain_2_block_16

  3. undated

    officialCapitalization of solution will be obvious if you find the correct method. TOMI will be a string of 9 random characters, also obvious from the method.

    Sourcereddit.com/r/Grycoin/comments/bsccmw/7_mbtc_quizchain_2_block_16

    Published answer

    (the 9 characters for the TOMI are the random characters after ELiZABETH)

    Sourcereddit.com/r/Grycoin/comments/bsccmw/comment/eopmxex

  4. undated

    officialFirst three characters of MD5 hash are bbc.

    Sourcereddit.com/r/Grycoin/comments/bsccmw/7_mbtc_quizchain_2_block_16

  5. undated

    officialUpdate: By popular demand, first digit of MD5 hash of solution only is 3.

    Sourcereddit.com/r/Grycoin/comments/bsccmw/7_mbtc_quizchain_2_block_16

  6. undated

    official9 random characters TOMI field and 9 characters name.

    Sourcereddit.com/r/Grycoin/comments/bsccmw/7_mbtc_quizchain_2_block_16

ID@agntn/puzzlesv0.26.0MIT license

Public data about public puzzles. Balances come from the chains' explorers through the worker, cached for five minutes. Every key here was public before it landed in a record.